** Description changed:
- I'm using an ASUS VivoBook (11th Gen Intel i7, Realtek ALC256 audio
- codec). On Ubuntu 24.04.2 LTS, the internal microphone is detected and
- listed correctly in PulseAudio/PipeWire and ALSA, but no input is
- captured. Microphone volume and boost are set to 100%, not muted. Input
- device appears as RUNNING in pactl, but no signal is recorded.
+ [Impact]
+ On various ASUS Vivobook with Realtek audio codec ALC256, the audio input
device will disappear thus the microphone does not work anymore. It happens
after this commit 3b4309546b48 ("ALSA: hda: Fix headset detection failure due
to unstable sort") on 6.14-rc1.
+
+ [Fix]
+ Backported patches for ASUS Vivobook which use the correct fixup which is not
affected by the order problem caused by commit 3b4309546b48 ("ALSA: hda: Fix
headset detection failure due to unstable sort")
+
+ [Test Case]
+ 1. Get ASUS Vivobook laptops and boot up.
+ 2. Check if the audio input device exist
+ 3. use `arecord` to record sound with the microphone
+
+ [Where problems could occur]
+ They are only quirked for ASUS Vivobook SSIDs with ALC256. Should have no
impact for other platforms. The risk should be low.
+
+
+ ========== original bug description ==========
+ I'm using an ASUS VivoBook (11th Gen Intel i7, Realtek ALC256 audio codec).
On Ubuntu 24.04.2 LTS, the internal microphone is detected and listed correctly
in PulseAudio/PipeWire and ALSA, but no input is captured. Microphone volume
and boost are set to 100%, not muted. Input device appears as RUNNING in pactl,
but no signal is recorded.
I tested:
- Ubuntu 24.04 with default kernel (6.11)
- Upgraded to mainline kernel 6.15 via `mainline` tool
- ALSA, PipeWire, PulseAudio all installed and working
- External USB mic works perfectly
- BIOS does not expose any audio/microphone control
- Mic also tested with `pw-record`, `arecord`, `gnome-sound-recorder` — all
silent
ALSA info:
https://alsa-project.org/db/?f=6d6466ba903b2e08b351046571e0fc54ddd13981
It seems like a pin configuration or unsupported codec issue with
ALC256. Please advise if this requires a patch or model-specific quirk.
Thank you.
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https://bugs.launchpad.net/bugs/2112330
Title:
Internal microphone not working on ASUS VivoBook with Realtek ALC256
(Ubuntu 24.04 + kernel 6.15)
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